Actuator



FIG. 1 is a top, front, left perspective view of the claimed design for an actuator;

FIG. 2 is a bottom, rear, right perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

Any portion of the actuator depicted in broken lines forms no part of the claimed design. 

CLAIM We claim the ornamental design for an actuator, as shown and described. 